利用常规测井评价裂缝发育强度的动态模糊评价法——以泌阳凹陷白云岩分布区为例  

On Fracture Growth Evaluation by Using Fuzzy Dynamic Evaluation Method through Conventional Logging——By Using Dolomite Distributing Zone in Biyang Depression for Example

作　　者：王婧慈[1] 文得进[1] 张超谟[1] 

机构地区：[1]油气资源与勘探技术教育部重点实验室(长江大学),湖北荆州434023

出　　处：《石油天然气学报》2010年第3期92-95,共4页Journal of Oil and Gas Technology

基　　金：国家科技重大专项(2008ZX05005-006)

摘　　要：根据泌阳凹陷白云岩区裂缝发育带范围及相应常规测井资料,建立对缝洞型储层反应敏感的参数作为评价特征。利用岩心资料,根据评价特征在整个研究区域内的不确定性及在裂缝发育段的分布,设计了一种考虑熵函数的动态权值确定法。采用加入权值的模糊评价法对选用的参数进行综合处理以对裂缝发育强度进行预测。应用结果表明,对于缺乏成像资料的白云岩层段,该方法效果良好。According to the distribution area of fracture growth zone in dolomite reservoirs and the corresponding conventional logging data in Biyang Depressing,parameters that sensitive to facture reservoirs were established for evaluation of features.By using core data,a dynamic weight method which considered the entropy function was designed based on the evaluation characters of uncertainty and the distribution of the fracture growth zone.Then fuzzy optimization evaluation method which considered the weights was used to process the selected parameters and predict the intensity of fracture development.The results show that the method is effective for the dolomite section lacking of imaging logging data.The method is effective.

关 键 词：裂缝识别 碳酸盐岩 常规测井 熵函数 权重 

分 类 号：P618.13[天文地球—矿床学]